Algebra/Maths-

AnswerTo factor m^2 + 16m + 64, first note that the squareroot(64) = 8.
Next, note 2*8 = 16, so it factors into (x+8)(x+8).
This makes each side have length x+8.
Since there are 4 sides, the total length of all of them, when added together,
is 4(x+8) = 4x + 32.